Rear Brakes DISCS & PADS (W212 E250 Sport) / "Just a Quick Job"

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pmcgsmurf

MB Enthusiast
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Feb 22, 2010
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5,622
Location
Stirling, Scotland
Car
E55 AMG W211, E250 Sport W212, (and some Imps)
The rear wear sensor warning came on on one of the W212, a 2010 with just over 30k miles on it.

MOT due this month so we will change the pads discs/rotors, only £100 for everything OEM and "just a quick job".

Easy enough to get the calipers and carriers off, usual pain to get the disc off even after backing the shoes off all the way in.

Then the fun, both rear brake back plates are corroded through at the top allowing stuff (water/dirt) to get into the brake drums (parking brake).
That will explain the noise that could sometimes be heard from both back wheels when rotating.

Brake shoes are severely scored even though the parking brake is for the most not used on this car (by the driver). That will be stones and the like getting inside.

To get the back plate replaced will involve pulling the wheel hub/flange out of the bearing.
This may cause the bearing to split so next thing may be new bearings too.

What a pain in the backside, sure some of these cars are part made out of playdoh.
 
You could just remove the backing plates by cutting them off, if they are that badly corroded. Would avoid the need for new bearings too.

Yes, I am suggesting keeping them off forever / until you fancy fitting new bearings.
 
You could just remove the backing plates by cutting them off, if they are that badly corroded. Would avoid the need for new bearings too.

Yes, I am suggesting keeping them off forever / until you fancy fitting new bearings.

That would make it a little tricky to fit the brake shoes. ;)
 
On the bright side you get to take delivery of more new parts :p
 
On the bright side you get to take delivery of more new parts :p

That's true, getting to know the delivery guy quite well.

Backing plates and shoes here tomorrow, new shoes and all the fitting parts inc. adjusters for £40 is not too bad.
 
Thought I'd post a pic. before someone says this thread is no good without pictures.

20181108_151924.jpg

Just to add to the list the ABS sensor rings didn't look great so these have been changed in the picture above.

So now the list is, pads, discs, shoes, shoe fitting kit, rear backing plate, bearings, bearing bolts & pulse rings.

Bit of a pain for a pad warning but good news is both carriers are back together and back on barring torquing everything up.
Will do that tomorrow and get the brakes back on.
 

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